Cant strip machine

Abstract

A machine for sawing cant strips and the like for use in the industrial roofing trade. This machine has a strong rigidly constructed support table, feed rollers mounted on said support table for feeding the wood material to be sawed, a plurality of saw blades mounted on adjustable saw arbors in two banks, the saw blades of the first bank being at an angle of approximately 45 degrees with the table surface, and the angle of the saw blades of the second bank being at an angle of approximately 45° with the table surface, but with the plane of the saw blades of the second bank being approximately 90° to the plane of the saw blades of the first bank. Each of the saw arbors of each bank are adjustable so that the width of the material being cut may be varied. Two high powered drive motors are provided, one for each bank of saw blades. An additional reduced speed drive is provided for the feed rollers. Safety features such as a cover for the entire machine, side tension rollers and a guide fence, covers for the drive belts and chains, and magnetic off-on switches and heater switches are provided.

What is claimed as new is as follows: 
     
       1. A cant strip sawing machine comprising; means for sawing multiple cant strips for use in the industrial roofing trade simultaneously including a strong support frame, means on said support frame for adjustably mounting two banks of saw blade assemblies, means provided for positively feeding material to be cut lengthwise into said banks of saw blade assemblies for the purpose of producing high speed cutting of a large number of cant strips simultaneously, the means for adjustably mounting the two banks of saw blade assemblies including a plurality of transverse bars across the width of the support frame, with each bank of saw blade assemblies having individual adjustments for each respective blade assembly associated with the transverse bars, and further including intermediate drive shafts appropriately supported on the said support frame together with adjustable means between each individual saw blade assembly and the closest associated intermediate drive shaft for permitting accurate adjustments of the width of cant strips to be cut as well as tension adjustments for the drive means for the saw blades. 
     
     
       2. A cant strip sawing machine comprising; means for sawing multiple cant strips for use in the industrial roofing trade simultaneously including a strong support frame, means on said support frame for adjustably mounting two banks of saw blade assemblies, and means provided for positively feeding material to be cut lengthwise into said banks of saw blade assemblies for the purpose of producing high speed cutting of a large number of cant strips simultaneously, the means for adjustably mounting the two banks of saw blade assemblies including a plurality of transverse bars across the width of the support frame, with each bank of saw blade assemblies having individual adjustments for each respective blade assembly associated with the transverse bars, and the means provided for positively feeding material to be cut including at least a single feed roller mounted transversely of the support frame. 
     
     
       3. The structure as set forth in claim 2, wherein the feed means includes two feed rollers of corrugated steel with one of said feed rollers being in front of the first of the first bank of saw blade assemblies and the second of said feed rollers being at the rear of the second bank of saw blade assemblies. 
     
     
       4. The structure as set forth in claim 3, together with additional tension adjusting means for each feed roller and with the front of said feed rollers including an idler roller associated therewith. 
     
     
       5. The structure as set forth in claim 4, including intermediate drive shafts appropriately supported on the said support frame together with adjustable means between each individual saw blade assembly and the associated intermediate drive shafts for permitting adjustments of the width of cant strips to be cut as well as tension adjustments for the drive means for the saw blades assemblies. 
     
     
       6. The structure as set forth in claim 5, together with safety device means to protect the operator and associated workers from injury being mounted on the support frame. 
     
     
       7. The structure as set forth in claim 6, wherein the safety device means includes a switch panel having magnetic on-and-off switches and a reversing switch for the feed rollers. 
     
     
       8. The structure as set forth in claim 5, including three drive motors, one of said drive motors driving the first bank of saw blade assemblies, the second of said drive motors driving the second bank of saw blade assemblies, and the third drive motor connected for driving the feed rollers. 
     
     
       9. The structure as set forth in claim 8, wherein the driving connection between the first two drive motors and their respective banks of saw blade assemblies comprise belt and pulley connecting means. 
     
     
       10. The structure as set forth in claim 9, wherein the drive connection between the third drive motor and the feed rollers includes a chain and sprocket type drive connection structure. 
     
     
       11. The structure as set forth in claim 10, wherein the first bank of saw blade assemblies include saw blades in a plane 45 degrees from the horizontal, and the second bank of saw blade assemblies include saw blades in a plane at an angle 45 degrees from the horizontal but opposite in orientation to the first bank of saw blades so the respective planes of the saw blade assemblies are perpendicular to each other. 
     
     
       12. The structure as set forth in claim 5, wherein the first bank of saw blade assemblies include saw blades in a plane 45 degrees from the horizontal, and the second bank of saw blade assemblies include saw blades in a plane at an angle 45 degrees from the horizontal but opposite in orientation to the first bank of saw blades so the respective planes of the saw blade assemblies are perpendicular to each other. 
     
     
       13. The structure as set forth in claim 12, including safety covers over the respective said drive connections for the protection of the operator of the machine and associated workers.